<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>p3_CSS常用值</title>
</head>
<style>
    h1{
        color: red;
        color: rgb(255,0,0);
        color: rgb(0,255,0);
        color: rgb(0,0,255);
        color: rgb(255,255,0);
    }
</style>
<body>
    <h1>测试颜色</h1>
</body>
</html>